ES9822PRO datasheet(38/126 Pages) ESS

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ES9822 PRO Product Datasheet

ESS TECHNOLOGY, INC. 109 Bonaventura Drive, San Jose, CA 95134, USA Tel (408) 643-8800 WWW.ESSTECH.COM

The registers for the ES9822 PRO can be accessed either using an I2C or SPI interface.

The MODE pin (pin 3) determines which interface will be used:

•

MODE = 1’b0

I2C interface (pull ups on SCL & SDA required)

▪

Pin 25 SDA

▪

Pin 26 SCL

▪

Pin 27 ADDR1

▪

Pin 28 ADDR2

ADDR1 & ADDR2 determine the I2C address

▪

I2C Slave Address = [5’b01000,ADDR2,ADDR1,R/W]

•

Possible addresses are 0x40,0x42,0x44,0x46 for I2C Slave Address

▪

I2C Synchronous Slave Address = [5’b01001,ADDR2,ADDR1,R/W]

•

Possible addresses are 0x48,0x4A,0x4C,0x4E for I2C Synchronous Slave Address

•

MODE = 1’b1

SPI interface

The SPI Slave interface can be accessed using the Pins 25-28

•

Pin 25 MOSI

•

Pin 26 SCLK

•

Pin 27 SS

•

Pin 28 MISO

I2C Slave Address

I2C Synchronous

Slave Address

ADDR2

ADDR1

0x40

0x48

0x42

0x4A

0x44

0x4C

0x46

0x4E

Table 24 - I2C Addresses

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